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rofi/include/widgets/widget.h
Dave Davenport c10ee955bd
#1437 - Fix sizing logic for widgets and textboxes. (#1444)
* [I1437] Textbox make get_desired_width depend on width.

Should fix some weird sizing issues on creation of widgest.


* [i1437] [View] Do the sizing based on the desired window width.

issue: #1437

* [i1437] Fix header documentation.
2021-09-07 19:40:07 +02:00

355 lines
10 KiB
C

/*
* rofi
*
* MIT/X11 License
* Copyright © 2013-2017 Qball Cow <qball@gmpclient.org>
*
* Permission is hereby granted, free of charge, to any person obtaining
* a copy of this software and associated documentation files (the
* "Software"), to deal in the Software without restriction, including
* without limitation the rights to use, copy, modify, merge, publish,
* distribute, sublicense, and/or sell copies of the Software, and to
* permit persons to whom the Software is furnished to do so, subject to
* the following conditions:
*
* The above copyright notice and this permission notice shall be
* included in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*
*/
#ifndef ROFI_WIDGET_H
#define ROFI_WIDGET_H
#include "keyb.h"
#include <cairo.h>
#include <glib.h>
#include <xcb/xcb.h>
#include <xcb/xproto.h>
/**
* @defgroup widget widget
*
* Generic abstract widget class. Widgets should 'inherit' from this class
* (first structure in there structure should be widget). The generic widget
* implements generic functions like get_width, get_height, draw, resize,
* update, free and clicked. It also holds information about how the widget
* should be packed.
*
* @{
*/
/**
* Abstract structure holding internal state of a widget.
* Structure is elaborated in widget-internal.h
*/
typedef struct _widget widget;
/**
* Type of the widget. It is used to bubble events to the relevant widget.
*/
typedef enum {
/** Default type */
WIDGET_TYPE_UNKNOWN,
/** The listview widget */
WIDGET_TYPE_LISTVIEW = SCOPE_MOUSE_LISTVIEW,
/** An element in the listview */
WIDGET_TYPE_LISTVIEW_ELEMENT = SCOPE_MOUSE_LISTVIEW_ELEMENT,
/** The input bar edit box */
WIDGET_TYPE_EDITBOX = SCOPE_MOUSE_EDITBOX,
/** The listview scrollbar */
WIDGET_TYPE_SCROLLBAR = SCOPE_MOUSE_SCROLLBAR,
/** A widget allowing user to swithc between modi */
WIDGET_TYPE_MODE_SWITCHER = SCOPE_MOUSE_MODE_SWITCHER,
/** Text-only textbox */
WIDGET_TYPE_TEXTBOX_TEXT,
} WidgetType;
/**
* Whether and how the action was handled
*/
typedef enum {
/** The action was ignore and should bubble */
WIDGET_TRIGGER_ACTION_RESULT_IGNORED,
/** The action was handled directly */
WIDGET_TRIGGER_ACTION_RESULT_HANDLED,
/** The action was handled and should start the grab for motion events */
WIDGET_TRIGGER_ACTION_RESULT_GRAB_MOTION_BEGIN,
/** The action was handled and should stop the grab for motion events */
WIDGET_TRIGGER_ACTION_RESULT_GRAB_MOTION_END,
} WidgetTriggerActionResult;
/**
* @param widget The container widget itself
* @param type The widget type searched for
* @param x The X coordination of the mouse event relative to @param widget
* @param y The Y coordination of the mouse event relative to @param widget
*
* This callback must only iterate over the children of a Widget, and return
* NULL if none of them is relevant.
*
* @returns A child widget if found, NULL otherwise
*/
typedef widget *(*widget_find_mouse_target_cb)(widget *widget, WidgetType type,
gint x, gint y);
/**
* @param widget The target widget
* @param action The action value (which enum it is depends on the widget type)
* @param x The X coordination of the mouse event relative to @param widget
* @param y The Y coordination of the mouse event relative to @param widget
* @param user_data The data passed to widget_set_trigger_action_handler()
*
* This callback should handle the action if relevant, and returns whether it
* did or not.
*
* @returns Whether the action was handled or not, see enum values for details
*/
typedef WidgetTriggerActionResult (*widget_trigger_action_cb)(widget *widget,
guint action,
gint x, gint y,
void *user_data);
/** Macro to get widget from an implementation (e.g. textbox/scrollbar) */
#define WIDGET(a) ((widget *)(a))
/**
* @param widget The widget to check
* @param x The X position relative to parent window
* @param y the Y position relative to parent window
*
* Check if x,y falls within the widget.
*
* @return TRUE if x,y falls within the widget
*/
int widget_intersect(const widget *widget, int x, int y);
/**
* @param widget The widget to move
* @param x The new X position relative to parent window
* @param y The new Y position relative to parent window
*
* Moves the widget.
*/
void widget_move(widget *widget, short x, short y);
/**
* @param widget Handle to widget
*
* Get the type of the widget.
* @returns The type of the widget.
*/
WidgetType widget_type(widget *widget);
/**
* @param widget Handle to widget
* @param type The widget type.
*
* Set the widget type.
*/
void widget_set_type(widget *widget, WidgetType type);
/**
* @param widget Handle to widget
*
* Check if widget is enabled.
* @returns TRUE when widget is enabled.
*/
gboolean widget_enabled(widget *widget);
/**
* @param widget Handle to widget
* @param enabled The new state
*
* Disable the widget.
*/
void widget_set_enabled(widget *widget, gboolean enabled);
/**
* @param widget Handle to widget
*
* Disable the widget.
*/
static inline void widget_disable(widget *widget) {
widget_set_enabled(widget, FALSE);
}
/**
* @param widget Handle to widget
*
* Enable the widget.
*/
static inline void widget_enable(widget *widget) {
widget_set_enabled(widget, TRUE);
}
/**
* @param widget widget Handle to the widget
* @param d The cairo object used to draw itself.
*
* Render the textbox.
*/
void widget_draw(widget *widget, cairo_t *d);
/**
* @param wid Handle to the widget
*
* Free the widget and all allocated memory.
*/
void widget_free(widget *wid);
/**
* @param widget The widget toresize
* @param w The new width
* @param h The new height
*
* Resizes the widget.
*/
void widget_resize(widget *widget, short w, short h);
/**
* @param widget The widget handle
*
* @returns the height of the widget.
*/
int widget_get_height(widget *widget);
/**
* @param widget The widget handle
*
* @returns the width of the widget.
*/
int widget_get_width(widget *widget);
/**
* @param widget The widget handle
*
* @returns the y position of the widget relative to its parent.
*/
int widget_get_y_pos(widget *widget);
/**
* @param widget The widget handle
*
* @returns the x position of the widget relative to its parent.
*/
int widget_get_x_pos(widget *widget);
/**
* @param widget The widget handle
* @param x A pointer to the absolute X coordinates
* @param y A pointer to the absolute Y coordinates
*
* Will modify param x and param y to make them relative to param widget .
*/
void widget_xy_to_relative(widget *widget, gint *x, gint *y);
/**
* @param widget The widget handle
*
* Update the widget, and its parent recursively.
* This should be called when size of widget changes.
*/
void widget_update(widget *widget);
/**
* @param wid The widget handle
*
* Indicate that the widget needs to be redrawn.
* This is done by setting the redraw flag on the toplevel widget.
*/
void widget_queue_redraw(widget *wid);
/**
* @param wid The widget handle
*
* Check the flag indicating the widget needs to be redrawn.
*/
gboolean widget_need_redraw(widget *wid);
/**
* @param wid The widget handle
* @param type The type of the wanted widget
* @param x The x coordinate of the mouse event
* @param y The y coordinate of the mouse event
*
* Get the widget that should handle a mouse event.
*
* @returns returns the widget that should handle the mouse event.
*/
widget *widget_find_mouse_target(widget *wid, WidgetType type, gint x, gint y);
/**
* @param wid The widget handle
* @param action The action to trigger
* @param x A pointer to the x coordinate of the click
* @param y A pointer to the y coordinate of the click
*
* Trigger an action on widget.
* param x and param y are relative to param wid .
*
* @returns Whether the action was handled or not
*/
WidgetTriggerActionResult widget_trigger_action(widget *wid, guint action,
gint x, gint y);
/**
* @param wid The widget handle
* @param cb The widget trigger action callback
* @param cb_data the user data to pass to callback
*
* Override the widget trigger action handler on widget.
*/
void widget_set_trigger_action_handler(widget *wid, widget_trigger_action_cb cb,
void *cb_data);
/**
* @param wid The widget handle
* @param x The x coordinate of the mouse event
* @param y The y coordinate of the mouse event
*
* Motion notify.
*
* @returns TRUE when handled.
*/
gboolean widget_motion_notify(widget *wid, gint x, gint y);
/**
* @param wid The widget handle
* @param width The Widget width to get height for
*
* Get the desired height of this widget recursively.
*
* @returns the desired height of the widget in pixels.
*/
int widget_get_desired_height(widget *wid, const int width);
/**
* @param wid The widget handle
* @param height The Widget height to get height for
*
* Get the desired width of this widget recursively.
*
* @returns the desired width of the widget in pixels.
*/
int widget_get_desired_width(widget *wid, const int height);
/**
* @param wid The widget handle
*
* Get the absolute x-position on the root widget..
*
* @returns the absolute x-position of widget of the widget in pixels.
*/
int widget_get_absolute_xpos(widget *wid);
/**
* @param wid The widget handle
*
* Get the absolute y-position on the root widget..
*
* @returns the absolute y-position of widget of the widget in pixels.
*/
int widget_get_absolute_ypos(widget *wid);
/**@}*/
#endif // ROFI_WIDGET_H